#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<iostream>
using namespace std;
#define doub(x) ((x)*2)
int main()
{
	for (int i = 1; i < 4; i++)
		cout << i << "doubled is___" << doub(i) << endl;
	cout << "2+3 doubled is:" << doub(2 + 3);
	return 0;
}